8. *75,000 is borrowed at compound interest lally.
rate of
2
3% for the 1st year,
4% for the 2nd year and
5% for the 3rd
year.
If interest is compounded annually, then
what is the amount to be paid after 3 years?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Can someone answer this question for me